H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 17)

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3. Secure the wrist strap lock and the alligator clip lock together.
4. Attach the alligator clip to the rack.
5. Make sure that the rack is well grounded.
Figure 4 Attaching an ESD-preventive wrist strap
(1) ESD-preventive wrist strap (2) Lock
(3) Alligator clip
EMI
All electromagnetic interference (EMI) sources, from outside or inside of
the wireless switch and application system, adversely affect the wireless
switch in a conduction pattern of capacitance coupling, inductance
coupling, electromagnetic wave radiation, or common impedance
(including grounding system) coupling. To prevent EMI, perform the
following steps:
• Take measures against interference from the power grid.
• Do not use the wireless switch together with the grounding equipment or
light-prevention equipment of power equipment, and keep the wireless
switch far away from them.
• Keep the wireless switch far away from high-power radio launchers,
radars, and equipment with high frequency or high current.